Poly(diindenonaphthalene) and Poly(indenofluorene) – Tuning the Absorption Properties of Low Bandgap Cross-Conjugated Polymers
✍ Scribed by Eduard Preis; Ullrich Scherf
- Book ID
- 102492581
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 130 KB
- Volume
- 27
- Category
- Article
- ISSN
- 1022-1336
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Summary: Semiconducting polymers with moderate HOMO–LUMO energy gaps between 1.5 and 2.0 eV are of increasing attraction as donor components of bulk heterojunction‐type organic solar cells. The synthesis and characterization of a novel cross‐conjugated, aromatic polymer, poly(diindenonaphthalene) PDIN, with a HOMO‐LUMO gap of ca. 1.6 eV (λ~max~: 724 nm) in comparison to poly(indenofluorene) PIF, a previously described, structurally related polymer, is presented. The replacement of the central benzene ring of PIF by a naphthalene moiety in PDIN leads to an increase of the optical bandgap energy of ca. 0.16 eV.
Chemical structure of PIF and PDIN.
magnified imageChemical structure of PIF and PDIN.